It is a difficult problem for high school students they can properly use the Internet．
#30653
A
what
B
where
C
when
D
whether
推荐题目
______ I’m tired of life here, I have been considering trying my luck in another city, but I haven’t decided yet.
#31972
A
As for
B
Now that
C
As if
D
Thanks to
____ regular exercise is very important, it’s never a good idea to exercise too close to bedtime.
#30024
A
It
B
As
C
Although
D
Unless
Leave your key with your neighbor ________ you lock yourself out one day.(2012·辽宁)
#30437
A
as long as
B
even though
C
in case
D
as if
—How long has John been here? — Two years, _______ he still has no friends.
#30856
A
and
B
so
C
but
D
or
_____________ all the seats were full, he had no choice but to stand up.
#33576
A
For
B
As
C
Though
D
Unless